B melville



May 28, 1957 J. B. MELvlLLE Re. 24,323

LIQUID DISPENSER WITHv STIRRING Original Filed llarch 19. 1954 i Y jmVENToR. \l Y coAl amc/. ,orar/af United States Patent Qice Re. 24,323Reissued May 28, 1957 LIQUID DISPENSER WITHLSTIRRING MEANS John B.Melville, Torrance, Calif.

Original No. 2,743,910, dated May 1, 1956, Serial No. 417,417, March 19,1954'. Application for reissue March 19, 1957, Serial No. 647,176y

4 Claims. (Cl. 259-408)v Matter enclosed in heavy brackets appears inthe original patent but forms no part of this reissue specification;matter printed inl italics indicates the additions made by reissue.

The present invention relates to aliquid dispenser vwithimprovedstirring. means, useful in dispensing drinks, particularlydrinks which are required to be heated, such I.as hot chocolate. l

Briey, the presentarrangement contemplates -animprovedliquidi.dispenser. whichy has `stirring rneansauto matically renderedoperative in routine handling of the liquid container.

It is a general object of the present invention to provide improvedmeans of this character in which it is unnecessary to assemble a stirrermechanism on the container after the container is replaced following adispensing operation.

Another object of the present invention is to provide an arrangement ofthis character which is pleasing in appearance and intriguing topotential customers of, for example, hot chocolate, so that they aremore inclined to purchase such drink.

Another object of the present invention is to provide an arrangement ofthis character in which the stirrer mechanism is rendered automaticallyinoperative and operative, respectively, upon removal from andreplacement on its heating source.

Another object of the present invention is to provide an improvedstirrer mechanism which is relatively simple and inexpensive.

The features of the present invention which are believed to be novel areset forth with particularity in the appended claims. This inventionitself, both as to its organization and manner of operation, togetherwith further objects and advantages thereof, may be best understoodl byreference to the following description taken in connection with theaccompanying drawings in which:

Figure 1 is a View in side elevation and partly in section of apparatusassembled in accordance with the present invention.

Figure 2 illustrates the manner in which the paddle is coupled to thestirrer mechanism to allow easy insertion and removal of the paddle fromthe small-necked container.

Figure 3 is a perspective view showing the stirrer mechanism with itsattachment prongs.

As shown in the drawings, the apparatus includes generally an electricalstove upon which rests a glass liquid container 11 having associatedtherewith a stirring mechanism 12, such stirring mechanism includinggenerally an electric motor 13 which rotates the rod 16 of the stirrerthrough the magnetically coupled elements 1S and 19.

For these general purposes, the electric stove 10 is mounted on the base20, to which is attached the upstanding bracket or standard 22, on theupper end of which is mounted the motor 13 having the rotatable outputshaft 13A. The shaft 13A has secured thereto a fabricated disc 28 of,for example, plastic insulating material in which is embedded apermanent magnet bar 30 of, for example Alnico. This permanent magnet30Ais generally rectangular in cross section andrhas a length relativelylarge incomparison to any one of its cross section dimensions. Thecooperating similar bar magnet 3 2 is embedded in a like fabricatedplastic disc 34 which, in turn, is secured to the stirrer shaft 16.

The shaft 16 is supported for rotation about a vertical axis in thestationary bearing member 38. The bearing member 38 comprises generallya bored cylinder having attached thereto a pair of prongs 42k and 43illustrated inv Figure 3, the free ends of such prongs 42.and 43 beingsecured ink corresponding cylindrical holes45 drilled in the handle 50of the container 11.

Theurotatable shaft 16 is provided with a hook 16A at its lower endwhich passes through an` enlarged-.aperture 60Ainthe paddle 60 so as toVallow such paddle 60 to be pivoted with respect to the shaft 1 6 in themanner illustrated in Figure 2, to facilitate and` to allowv insertionand removalof the paddle 60 from the interiorof the containerllforcleaning,prepair and otherpurposes.

It is clear that by this arrangement energization of the motor 13results in direct driving of the bar magnet 30 and the magnetism inducedfrom such bar 30 acting on the similar bar magnet 32 causes the shaft 12and the paddle 60 to be rotated to thereby cause the contents of thecontainer 11 to be continuously stirred while such liquid is beingheated or maintained at a predetermined temperature by the electricstove 10. lf desired, the electricity furnished to the stove 10 may becontrolled by, for example, a thermostat or by a conventional timer 70.

One feature of the present arrangement is that by the magnetic drivedescribed above may be broken by simply removing the container 11 fromthe stove 10 as, for example, when it is desired to dispense the liquidfrom the container. That part of the stirrer mechanism which remainswith the container is relatively small, of light weight and does notinterfere with the normal dispensing operation. To achieve these generalpurposes, there must be some vertical spacing between the bar magnets 30and 32 to allow the container 11 to be lifted from the stove in theprocess of removing the same, or replacing the same on the electricstove.

While the particular embodiments of the present invention have beenshown and described, it will be obvious to those skilled in the art thatchanges and modifications may be made without departing from thisinvention in its broader aspects and, therefore, the aim in the appendedclaims is to cover all such changes and modifica tions as fall withinthe true spirit and scope of this invention.

I claim as my invention:

1. In an arrangement of the character described, a base, a stove on saidbase, a bracket attached to said base and extending upwardly therefrom,a container resting on said stove, a motor mounted on said bracket,rotatable means within said container and supported on said containerfor rotation about a stationary axis thereon, a first magnet rotativelydriven by said motor, a cooperating magnet attached to said rotatablemeans and spaced from said first magnet by an air gap to allow thecontainer and rotatable means therein to be freely moved onto and fromsaid stove.

2. In an arrangement of the character described, a base, a stove on saidbase, a bracket mounted on said base and extending upwardly therefrom, acontainer resting on said stove, said container having a pouring openingin the top thereof, a rotary stirring device in said container carriedby a shaft extending upwardly through said pouring opening, mountingmeans for said shaft readily removably mounted on said container andsupporting said shaft for rotation about a first axis xed relative tosaid container, said mounting means and shaft being dimenabout a secondaxis substantially coincident with said first axis, and a permanentmagnet secured to said shaft below said rst magnet and separatedtherefrom by an air gap.

3. In an arrangement of the character described, a base, a stove on saidbase, a bracket attached to said base and extending therefrom, acontainer resting n said stove, a motor mounted on said bracket,rotatable means within said container and supported on said containerfor rotation about a stationary axis thereon, a rst magnet rotativelydriven by said motor, a cooperating magnet attached to said rotatablemeans and spaced from said first magnet by a gap to allow the containerand rotatable means therein to be freely moved onto and from said stovesaid cooperating magnet being supported by said rotatable means out ofengagement with said container, said first magnet being maintained outof engagement with said container by said motor.

4. In an arrangement of the character described, a base, a stove on saidbase, a bracket mounted on said base and extending therefrom, acontainer resting on said stove, said container having a pouring openingin the top thereof, a rotary stirring device in said container carried 4by a shaft extending upwardly through said pouring opening, mountingmeans for said shaft readily removably' mounted on said container andsupporting said shaft for rotation about a first axis fixed relative tosaid container, said mounting means and shaft being dimensioned andarranged so as to not substantially obstruct said pouring opening, amotor on said bracket adjacent said container, a first permanent magnetconnected to and driven by said motor about a second axis substantiallycoincident with said first axis, and a second permanent magnet securedto said shaft adjacent said first magnet and separated therefrom by agap, said second permanent magnet being maintained by said shaft out ofengagement with said container, said first permanent magnet beingmaintained by said motor out of engagement with said container.

References Cited in the le of this patent or the original patent UNITEDSTATES PATENTS 1,734,120 Farrington Nov. 5, 1929 1,735,143 SuperviellcNov. 12, 1929 1,826,948 Nelson Oct. 13, 1931 2,350,534 Rosiuger June 6,1944 2,518,758 Cook Aug. 15, 1950 2,711,306 Levi June 21, 1955

